T--- -- ---T
T--- ---A-----
---
--A-- T-
-------
----- T- ------
A---- -- ----T
What do you see?
2 T’s for every A is one pattern
On thing that you do not see in that pattern is that the A in the second line is in a misspelled word: PENACILIN.
Part of the coding technique is to leave an indicator like that to signal that there is a code hidden in the message. The misspelled word attracts attention, and the A is highlighted, which says highlighted letters mean something.
I see T n’ A.